Improvement in lubbicating pullets



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' JAM-ES H. GRAY, OF BOSTON, MASSACHUSETTS.

Letters Patent No. 82,110, dated September 15, 1868; anteclated. September 8, 1868.

IMPROVEMENT IN LUBRIGATING PULLEYS.

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TO ALL WHOM IT MAY OONOERN:

Be it known that I, JAMES H. GRAY, of Boston, in the county of Suffolk, and State of Massachusetts, have invented certain new and useful Improvements in' Oilers for Loose Pulleys, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in whichy Figure 1 represents an end view of an ordinary pulley with my invention applied to two sides of the-hub of such pulley. On one side the oiler and a portion of the hub are shown` in section, and on the other side of p said hub is shown a side elevation of the oiler. t Figure 2 represents a central section of a pulley with my improvements applied to the hub, at one side thereof.

Figure 3 represents a side elevation of a detached oiler.

The object of this invention is to provide a simple, cheap, and very eihcient device for oiling loose pulleys, or pulleyswhioh run looselyon rotatory shafts, and which pulleys cease attimes to rotate while the shaft rotates within the pulley; to provide an oiling-device that will greatly economize in the use of oil or other lubricant, and prevent such oil being thrown by centrifugal force on to belts, bands, or other moving or stationary objects wthinthe range of the loosey pulley, or of dropping on to machinery, or goods or fabrics being made by machinery, or on persons in attendance.-

And this invention consists ot a hollow ball, a, having a perforated stem, b, which screws into a. hole in the hub d of the pulley, said hollow ball being provided with a receiving-port, c, at that side which comes next to the end of the pulley, as clearly shown in iig. 1. i

An ordinary wick, g, of some brous material, passes through the perforated stem b, from the shaft-hole E of the pulley to the cavity within the ball, which cavity contains considerable of a quantity of such wick for v saturation, retention, and proper delivery of o'il to the interior of the hub', and to the shaft running through it, the oil being conducted from -the cavity in the ball to the shaft by the saturated wick, and through the perforated stem.

Within the cavity of the ball, and surrounding the perforation yot' the s tem, is an annular hub, e, to prevent any surplus of oil, `which might be in the cavity of the ball from running down the wick, if, bychance, the loose pulley should cease rotating with the Qiler upward.

The receivingpart c must be through the side of the shell, and the oiler applied, as shown in iig. 1, so that no oil'can be discharged fnom the oiler by centrifugal force caused by the rotary motion of the pulley, as such centrifugal force will throw the surplus oil to the head or outer extremity of the cavity, where it will-be taken up and conveyed to the shaft by the wick g.

`This improved oiler may be applied to sliding-devices as well as to pulleys or other devices which have a rotary motion, andl when applied to reciprocating-devices, the receiving-port c should be at a right angle with the line of motion of such reciprocating-device, so that oil may not be thrown out of the port when the direction of motion is changed. Y

Dust or dirt cannot enter this improved oiler, which iscapable of receiving only what is properly injected or applied through the port c, and without the trouble andinconvenieuce of removing a cap or cover, so'common in other devices used for oiling reciprocating movers.

This improved oi1er, applied tothe hub of a pulley not more than four 'or six inches in the length of its bearing on the shaft, and not revolving at a very high velocity, will keep the shaftV and thev pulley suiiiciently lubricated; but if the length of `the pulley-hub is more than six inches, or if said pulley rotates rapidly, then it may be desirable to apply more than one .oiler, and at such suitable points or positions that the shaft may be well and properly lubricated. p

Care should be taken that no leak or vent-holes occur througlrtheV shell ofthe-cavity, except the port c, as

shown and described, so that no oil can be thrown out by the motion of the pulley, or leak out when the pulley 1 is at rest.

This improved oiler may, after the wick is saturated, be lled with oil to near the lower side of the port c, and retain the Whole of such oil against the action of the pulley revolving at any safe velocity, and until taken y up by the wick and economically applied to the shaft or other devicel arranged to receive it.

What I claim as new, and desire to secure by Letters Patent, is`

Au oiling-device for loose pulleys, when constructed, applied, and arranged to operate substantially as and for the purpose described.

Witnesses:

NATHAN BROWN, JOHN E. CRANE.

JAMES H. GRAY. 

